66242103 has 16 divisors (see below), whose sum is σ = 90675936. Its totient is φ = 42997760.

The previous prime is 66242089. The next prime is 66242107. The reversal of 66242103 is 30124266.

It is a cyclic number.

It is not a de Polignac number, because 66242103 - 2⁴ = 66242087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66242107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20263 + ... + 23303.

It is an arithmetic number, because the mean of its divisors is an integer number (5667246).

Almost surely, 2^66242103 is an apocalyptic number.

66242103 is a deficient number, since it is larger than the sum of its proper divisors (24433833).

66242103 is a wasteful number, since it uses less digits than its factorization.

66242103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66242103 is about 8138.9251747390. The cubic root of 66242103 is about 404.6175386471.

Adding to 66242103 its reverse (30124266), we get a palindrome (96366369).

The spelling of 66242103 in words is "sixty-six million, two hundred forty-two thousand, one hundred three".